No I don't think Tennis players throw matches. Just from Djokovic losing to Mugsarevic he'll lose 820 points in the rankings. The reason why both Nadal and Djokovic lost is, they can't handle how fast the courts are, and Nadal choked. If Federer wins this tournament, which now he should easily, he'll be back at #2 in the rankings. And with Djokovic losing 820 points, he's being given a great opportunity to get back to the #1 ranking, which he wants.